HTC's HD2 carrying a secret stash of hidden RAM

Will this phone ever stop surprising us? Rumblings that all HD2 devices have 576MB of RAM inside them started developing in China a little while before T-Mobile unveiled its upgraded US-bound handset with, funnily enough, the same amount of memory. Now, those trusty souls over at XDA-developers have concocted custom ROMs for everyone else to free up the extra 128MB of operational headroom, and user feedback appears to corroborate the theory. We can hardly begin to fathom the reasons for HTC disabling part of its available hardware, other than to guess that a WinMo 7 upgrade was in the company's plans for this phone all along and it just wanted to keep its ability to handle the new OS under wraps. Video and pictorial evidence of cracking past the 448MB barrier after the break.